net/ark: add performance optimizations
net/ark: add performance optimizations

Added software register writes for hw optimization and
performance fixes.

Signed-off-by: John Miller <8c3e694821b089e49385d637347abd0ef3d091ca@atomicrules.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk